Simrad AP27, AP26 manual SimNet network cables, SimNet power and termination

Simrad AP26 and AP27 Autopilots

SimNet network cables

A SimNet unit has one or two yellow SimNet connectors. There are no dedicated “in” or “out” connectors. Find the shortest and easiest way to route the SimNet cables from product to product and select the standard length cables from the SimNet accessory program. SimNet cables are available in 0.3 m (1 ft.), 2 m (6.6 ft.), 5 m (16.6 ft.) and 10 m (33 ft.) length all with plugs at both ends. Connect products with two SimNet connectors in a daisy chain and use drop cable and T-joiner for products with only one SimNet connector.

The SimNet power cable has a red connector with built in terminator.

If you plan to extend your SimNet system in the future it may be an idea to prepare for it by adding a few T-joiners in central locations. The T-joiners provides easy access to the network and can be replaced with a new product, or the new product can be connected via a drop cable.

SimNet power and termination

The following rules should be observed when installing SimNet.

1.It must have a separate 12VDC power from the battery bus or the circuit breaker board to avoid interference

2.It must not be connected to the supply voltage terminals of the Autopilot Computer (introduces interference).

3.It will power and be powered from an IS12 instrument system.

4.It must be properly terminated.

The SimNet network has to be terminated according to the number and type of products connected.

In a small system consisting of maximum 5 SimNet products and a total length of 5 m SimNet cable you need the SimNet power cable with built in termination (red disc on cable plug).

For additional information about SimNet ask for the separate SimNet Manual.

70 20221586B